Shock protector capable of acting as lifting jack



Dec. 20, 1927. 1,653,218

J. T. LANFRANCHI SHOCK PROTECTOR CAPABLE OF ACTING- AS LIFTING JACKFiled Dec. 22. 1926 '3 Sheets-Sheet 1 Jcan Lassa/m Zanfrnnchi Dec.20,1927.

J. T. LANFRANCHI SHOCK PROTECTOR CAPABLE OF ACTING AS LIFTING JACK 3Sheets-Sheet 2 Filed Dec. 22. 1926 Fig.5.

Dec. 20, 1927. 1,653,218

J. T. LANFRANCHI SHOCK PROTECTOR CAPABLE OF ACTING AS LIFTING JACK FiledDec. 22. 1926 3 Sheets-Sheet 3 Fig.8.

1 r 1 e Re ffg 5 gr 5 f [Iv/01hr.- 1 E 1 Jim Ewan/hf Lanfizmcfi WKWZMZPatented Dec. 20, 1927.

UNITED .S TE

PATENT OFFICE.

JEAN roUssAI r A rnANcH or PARIS, FnnNon, AssreNon To NATHAN J. GAR-FUNKEL AND BENJAMIN J. Y'GARFUITKEL, Born .OFHENEW YORK, N. Y.

SHOCK rno'rncron CAPABLE or. ACTING AS: LIFTING JACK.

Application filed December 22, 1926, Serial No. 156,'372,an'd in FranceNovemberB, 1926.

The present invention has for object a system particularly applicable tomotor. cars,

adapted to normally serve as a shock-protector and capable, when this isnecessary,

ot'beingused as a lifting-jack.

The invention isessentially characterized by the fact that each wheel isprovided with an independent-device, so that it is possible,

at will, to lift a wheel, the threeother wheels being left resting onthe ground. L

This device is itself characterized by the combination of a resilientlymounted abutment member and-ot-a :lit'tingmember, controlled by a screw,these two membersbeing co-axially arrangedand. operating indepcndently.I g I This device ispivoted on an axis, so that it can be placed in anapproximately horizontal position, for-serving as a shock-protector, orin a vertical position forserving as a screw-jack.

The invention is morevercharacterized by the fact-that withthe screw'and'nut lifting system is combined a .Wormand wormwheel transmission,this "rendering the manipulation v'erysimple ande'asy.

Another characteristic arrangement consists in the method of pivotingthe device on an axis enclosed inabox or casingmade in two readilyseparable art-s. so; that by removing the front part 0 thebox, the entire system is immediately detached from the car.

"Finally the invention is completed by an accessory device permittingthe locking of one or more devices in the position ofia screw-jack andthus preventing the theft of the car. r

The inventionuis illustratedgbntby way of example only, intheaecompanying drawing in which:

Fig. -1:is an elevation showingthe front and the rear-0t a'chassisprovided with the new device;

Fig. '2 is a corresponding plan view scale, of'the new device fitted atthe front; Fig '4 isa vertical section made according to line A-'AofFig. 3; I I

Fig; 43 is a plan View;

tube

Fig. is a side View of'the device fitted at the rear; Fig. 7 is a sideelevation and Fig. 5 a

Figs. 9 and 10 illustrate'the locking means serving to .hold the systemimposition for running.

As illustrated in the drawing, each of the devices adapted for eachwheel comprises screwjack.

The metal fitting .a' is slightly different at the front and at the rearso that it can be fitted either on the longitudinal bearer d,

or on the-reancross member'e. At the front,

it is secured on the longitudinal bearer by means cit clamps d (Fig. 4).At the rear it iso connected to the cross member -e-by bolts 6 (Fig.6).p

The said metal fitting a carries a 'halfboxfion which are bolted twomembers f (Fig; 3) connected together by bolts, the whole constituting abearing in which can Fig. 8 is a plan Viewcorrespondingto rotate abushgg(Fig. 4) ;the latter is'made in two parts assembled by means of bolts -9In this-bush is placed a worm h (Fig.

4'), gearing'with a Worm wheel 2' rigidly secured on 'apscrew Thelatter-bears on a ball z' rit is in engagement with a nut 7"integralwitha tube j terminated by ahead 7'? provided with teethadapted-to prevent the same -from slipping in the ground. I

- About the tube j is arranged another tube is rigid with the buffer Z,of suitable shape.

so i

The tube is i's terminated by a flange m bolted on a washer ml,- made intwo parts and bearing on a springn. The flange m is connected tothe tubeis by a socket 0,

within which is housed a shoulder i of the Thefront device is providedwith a square p which fits on the-axle 9' (Fig. .3). Fig. 3 is anelevation, on-an enlarged At the rear, the device is provided with anarm r" (Fig. 6) which rotates. on anaxis r and can take either anoff-set position,

hole 1, or the operative position illustrated in full lines, in which itbears on a bracket 8 and fits under the axle t.

The bracket 8 is provided with a taking up screw 8 for compensating thecollapsing of the spring.

The devices are held in the position for running by means of hooks u(Figs. 9 and 10) turning on the axes of the joints (Z and e of thesprings (Fig. 1) 'These hooks,

engage with a stud o secured on the side of the outer tube of eachdevice (Fig. 4). For that purpose, they are provided with a movable hooka pressed by a spring a and provided with operating handles u permitting their release.

The operation is as follows:

In the position for'running, the four devices are in the horizontalposition, as shown in Fig. 1.

If one of the buffers Z receives a shock it yields under this shock bycompressingthe spring a. In this movement, the tube carrying the bufferlongitudinally slides on the tube j, the lifting members do not move.

If it is desired to lift a front wheel, the corresponding device islowered. For that purpose, the hook it is first released'by acting onthe handle a and the system is made to pivot about the axis 7) forbringing it in the vertical position illustrated in dot and dash lines.The square 29 comes underneath the axle g, in proximity to the wheel tobe lifted.

The end of a T-shape'd wrench is then inserted into the square opening72/ (Fig. 4) and the worm 2' and, consequently, the screw 2', are causedto rotate. The nut 'j is verti cally moved and the toothed head j comesin contact' with the ground; it lifts the tube 74 carrying the square 7)and with the latter the axle as well as the desired wheel.

Being in this position, illustrated in detail in Figs. 2 and 3, if it isdesired to lock the car so as to prevent the theft of the same, a hook mis fitted over the axle (Fig. 3) and a padlock is engaged in an eye mwhich renders this hook rigid with the square 2).

When it is desired to restore to the position for running, the padlockis removed; then the lifting members are caused to rotate in reversedirection, until the screw 7' has completely entered the tube j. Thesquare p ceases to be in contact with the axle, the device is made torock and the stud 'v is inserted in the hook it which holds it in itshorizontal position.

If a rear wheel is to be lifted, the same method of procedure isadopted. But, before having completely brought back the system into thevertical position, the pin is removed from the arm'r (Fig. 6) forallowing it to take the position shown in full lines. The tube 70 iscompletely brought back to vertical position, thus causing the said armto come in engagement withthe axle t. The remainder of the operation iseffected as for a front wheel.

From the foregoing, it will be understood that the passage from theposition of shockprotector to that of screw-jack is effected with greatease and very rapidly. a

The new device thus has multiple functions:

1. It serves as shock-protector;

2. Itserves as an independent lifting-jack for each wheel;

'3. It serves as a theft-preventing apparatus by lifting one of thewheels and by rendering the apparatus brought to vertical position,rigid with the car by a safety looking deviceQ It will be noted that thespring a is exteriorly arranged so that it can always be ascertained ifit is in good condition. Moreover, this spring can be as powerful asdesired. I

The above arrangements are of course given by way of example only; allconstructional details, forms, dimensions and mate rials used can bevaried according to circumstances without departing thereby from theprinciple of the invention.

Claims 1. In a motor car, an independent device for each wheel andcapable of serving as a shock-protector and as screw-jack, means forpermitting this device to rock, means for absorbing the shockswhen itisin running position, means for lifting the wheel when it is to serve asa screw-jack, the means for absorbing the shocks and the means forlifting the wheel being independent from each other and co-axiallyarranged.

2. In a motor car, an independent device for each wheel and capable ofserving as a shock-protector and as screw-jack, means for permitting thedevice to rock, abutment members. a resilient system serving as abearing for these members, a worm and worm wheel control for producingthe lifting.

3. In a-motor car, an independent device fitted to each wheel andcapable of serving as a shock-protector and as screw-jack, a box securedto the chassis, a pivotal axis for this box, a telescopic systemcarrying an abutment, a worm and worm wheel control actuating a. headcoming in engagement with the ground for lifting the wheel.

4. In a motor car, an independent de vice for each wheel and capable ofserving as a shock-protector and as screw-jack, a box secured to thechassis, a pivotal axis for this box, a telescopic system carrying anabutment, a worm and worm wheel control actuating a head coming inengagement with the ground for lifting the wheel, jointed arms which canbe placed in operative position for lifting the axle.

5. In a motor car, an independent device 6. In a motor car, anindependent device for each wheel and capable of serving as ashock-protector and as screw-jack, a box secured on the chassis, thisbox being made in two parts and opening easily, a pivotal axis for thisbox, a telescopic systemcarrying an abutment, a worm and worm wheelcontrol actuating ahead coming in engagement with the ground for liftingthe wheel.

7. In a motor car, an independent device for each Wheel and capable ofserving as a shock-protector and as screw-jack, a hollow box secured onthe chassis, this box being made in two parts and opening easily, apivotal axis for this box, a telescopic system carrying an abutment, aworm and worm wheel control placed in the said box and actuating a headcoming in engagement with the ground for lifting the wheel.

8. In a motor car, an independent device for each wheel and capable ofserving as a shock-protector and as screw-jack, a tube carrying anabutment member, a spring for this tube, a screw and a tube-nut co-axialwith the preceding tube, a worm and Worm wheel control for the saidscrew. 7 9. In a motor car, an independent device for each wheel andcapable of serving as a shock-protector and as screw-jack, a tubecarrying an abutment member, a spring for this tube,a screw and atube-nut co-axlal with the precedingtube, a. worm and worm wheel controlfor the said screw, means for pivoting the system and means for bringingit in position for running. I

10. In a motor car, an independent device for each wheel and capable ofserving as a shock-protector and as screw-jack, a box secured to thechassis, a'worm and a worm wheel in the said box, a pivotal axis forthis box, ascrew rigid with the worm wheel, a tube-nut cooperating withthe screw, an outer tube sliding on the tube-nut, a spring for thelattertube.

11. In a motor car, an independent device foreach wheel and capable ofserving as a shock-protector and as screw-jack,

'means for permitting this device to rock,

means for absorbing the shocks when it is 111 running position, meansfor lift ng the wheel when it is to serve as a screw-jack,

locking means immobilizing the system in position for littin Theforegoin specification of my shockprotector capable of acting as alifting-jack signed by me this 7th day of December,

JEAN TOUSSAINT LANFRANCHI.

